[API Proposal]: IPAddress should implement ISpanFormattable/Parsable<IPAddress>

[stephentoub]

Background and motivation

IPAddress already provides TryFormat/TryParse methods. It should implement the appropriate interfaces to go along with these. Doing that for IPAddress, for example, means the IPAddress's TryFormat will be used as part of string interpolation rather than its ToString() being used.

API Proposal

namespace System.Net

public class IPAddress
+    : ISpanFormattable, ISpanParsable<IPAddress>
{
    // all of the interface members implemented explicitly
}

API Usage

IPAddress address = ...;
string s = $"The address is {address}";

Alternative Designs

No response

Risks

No response

[ghost]

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Issue Details

---

Background and motivation

IPAddress already provides TryFormat/TryParse methods. It should implement the appropriate interfaces to go along with these. Doing that for IPAddress, for example, means the IPAddress's TryFormat will be used as part of string interpolation rather than its ToString() being used.

API Proposal

namespace System.Net

public class IPAddress
+    : ISpanFormattable, ISpanParsable<IPAddress>
{
    // all of the interface members implemented explicitly
}

API Usage

IPAddress address = ...;
string s = $"The address is {address}";

Alternative Designs

No response

Risks

No response

Author:	stephentoub
Assignees:	-
Labels:	area-System.Net, api-ready-for-review
Milestone:	8.0.0

[stephentoub]

Implementation:
main...stephentoub:runtime:ipaddressinterfaces

[stephentoub]

cc: @antonfirsov

[antonfirsov]

@stephentoub thanks for pushing this! Since the implementation looks trivial, I think we should get this done before finishing #82779.

[bartonjs]

Video

Looks good as proposed

namespace System.Net

public class IPAddress
+    : ISpanFormattable, ISpanParsable<IPAddress>
{
    // all of the interface members implemented explicitly
}